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std::reverse

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< cpp‎ | algorithm

 
 
アルゴリズムライブラリ
機能します
Original:
Functions
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シーケンス動作を非改変
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Non-modifying sequence operations
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シーケンス動作を変更する
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Modifying sequence operations
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操作を仕切る
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Partitioning operations
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(ソートされた範囲で)ソート操作
Original:
Sorting operations (on sorted ranges)
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バイナリ検索操作(ソート範囲で)
Original:
Binary search operations (on sorted ranges)
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(ソートされた範囲で)操作を設定します
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Set operations (on sorted ranges)
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ヒープ操作
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Heap operations
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最小値/最大値操作
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Minimum/maximum operations
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数値演算
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Numeric operations
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Cライブラリ
Original:
C library
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Defined in header <algorithm>
template< class BidirIt >
void reverse( BidirIt first, BidirIt last );
レンジ[first, last)の要素の順序を反転.
Original:
Reverses the order of the elements in the range [first, last).
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目次

[編集] パラメータ

first, last -
逆転する要素の範囲
Original:
the range of elements to reverse
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Type requirements
-
BidirIt must meet the requirements of BidirectionalIterator.
-
The type of dereferenced BidirIt must meet the requirements of Swappable.

[編集] 値を返します

(なし)
Original:
(none)
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[編集] 可能な実装

template<class BidirIt>
void reverse(BidirIt first, BidirIt last)
{
    while ((first != last) && (first != --last)) {
        std::swap(*first++, *last);
    }
}

[編集]

#include <vector>
#include <iostream>
#include <algorithm>
 
int main(int argc, char** argv)
{
    std::vector<int> v({1,2,3});
    std::reverse(std::begin(v), std::end(v));
    std::cout << v[0] << v[1] << v[2] << '\n';
 
    int a[] = {4, 5, 6, 7};
    std::reverse(&a[0], &a[4]);
    std::cout << a[0] << a[1] << a[2] << a[3] << '\n';
}

Output:

321
7654

[編集] 複雑

firstlastとの間の距離の線形
Original:
linear in the distance between first and last
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[編集] も参照してください

逆転された範囲のコピーを作成します
Original:
creates a copy of a range that is reversed
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(関数テンプレート) [edit]